What is the Z07A record? z07_level and z07a_level
- Article Type: Q&A
- Product: Aleph
- Product Version: 20
What is the Z07A record? What are z07_level and z07a_level?
In Aleph 17 and up, a z07a record is written whenever a z07 indexing doc record is processed by the ue_01_a routine.
This z07a record results in additional processing, by:
the ue_01_z0102_index indexing daemon
the ue_01_word_index (Aleph 18/ Aleph 19) or the ue_01_word_parallel (Aleph 20)
Both processes are started at the same time as the ue_01_a process (by the $aleph_proc/util_e_01 procedure).
Prior to Aleph 17, the z07_level indicated what processing had been done on the z07. This function is now switched to the z07a_level. (See below.)
In version Aleph 17 and up, the z07_level can have two values: "1" not processed or "2" processed (unsuccessfully ... and, therefore, not deleted).
z07_level = 2 indicates that ue_01 has had a problem processing this particular z07. Almost certainly some index has not been updated.
The z07a_level (the first byte of the z07a_rec_key) indicates what stage a particular z07a is at:
("1") not processed by either or unsuccessfully processed by ue_01_word_parallel
("2") successfully processed by ue_01_word_parallel
("3") unsuccessfully processed by ue_01_z0102
("4") successfully processed by ue_01_z0102
Example for "1"
The ue_01_word_parallel is an off-loading of the Word indexing to a separate process, so it can occur faster, in parallel, to the ue_01_a process.
Once a z07a is successfully processed by both procedures, it is deleted.
Category: Background processing (500)
Subject: Ue (500)
- Article last edited: 10/8/2013